Air-distributing system



Sept. 7 1926.

H. H. PAYz'ANT AIR DISTRIBUTING SYSTEM Filed Sept. 5, 1925 2Sheets-Sheet l ATTOR NEYS Sept 7 1926.

H. H. PAYZANT AIR DISTRIBUTING SYSTEM Filed Sept. 5, 1925 2 Sheets-Sheet2 INVENTOR ATTORNEYS Patented Sept. 7, 1926.

UNITED STATES HENRY HARRIS PAYZANT, OF EVERETT,

PATENT" OFFICE.

WASHINGTON, ASSIGNOR TO WOOD CON- AIR-DISTRIBUTING SYSTEM.

Application filed September This invention relates to an improved airdistributing system adapted to be used in the manufacture of resilientmasses or bodies of fibrous material in the form of 6 sheets, layers orbatting, and especially adapted to be used in the manufacture of theproduct known as wood cotton.

In the manufacture of wood cotton, it is the usual practice to separatewood fibers 10 into a flocculent mass by shredding, and deposit theseparated fibers onto a belt or screen conveyor so that they arrangethemselves into a loose, resilient, heterogeneous mass. The fibers maybe treated. with .an adhesive either before they come in contact withthe conveyor or immediately thereafter.

The principal object of my invention is to provide an improved means fordepositing loose materials, such as wood fibers,

upon a traveling surface. To be more specific, my invention relates tomeans for building up a composite layer of loose material on a conveyoror traveling surface, perhaps the most important feature of my inventionbeing the provision of means for altering the character of severalstreams of material being deposited upon the conveyor. My inventionmakes it possible to vary the character of the composite layer ofmaterial throughout a Wide range, this being accomplished by regulatingdevices capable of very fine adjustment.

In general, my invention comprises a plu rality of distributing hoodsand means for blowing loose material, such as wood fibers, into thehoods. The hoods are arranged so as to deposit the loose material on atraveling screen and means are provided within the hoods for regulatingthe distribution of the material passing through the hoods. Fluidpressure means is provided for regulating the velocity and quantity ofmaterial supplied to' the hood. My inven-. tion includes means wherebytwo or more materials capable of being conveyed by air under pressurecan be intimately mixed together and deposited upon a conveyor.

The various objects and advantages of my invention will be apparent uponconsider ing the following detailed description which 5, 1925.Serialflo. 54,881.

is. to be taken in conjunction with the'accompanying drawings in whichFigure 1 is a horizontal section of one embodiment of my improveddistributing system, taken on line 1 .1 of Figure 2.

Figure 2 is an elevation of'the distributing system shown in Figure 1.

Figure 3 is a vertical section view of one of the distributing hoodsshown in Figures 1 and 2.

I Figure 4 is a vertical section view of the parts associated with thedistributing hoods shown in Figure 3. Y

Figure 5 is an elevation of the regulating ldeviice employed within eachdistributing Figure 6 is a vertical section view of the device shown inFigure 5; and

Figure 7 is a plan view of one of the parts shown in Figures 5 and 6.

In Figures 1 and 3, I have illustrated a conveyor 1, which may be of theordinary type commonly used in the' manufacture of wood cotton orsimilar products. A composite layer of material 2 is deposited on thisconveyor by a plurality of distributing hoods 3, 4, 5, 6 and 7. Each ofthese hoods deposits a thin layer of material on the conveyor and theselayers, superimposed oneach other, form the composite layer 2 shown atthe left in Figure 2. The distributing hoods ma be of an desired formbut I have found tfi e particu ar form shown in the drawings to be quitesatisfactory. This type of hood is substantially fan-shaped as bestshown in Figure 3. The loose ma.- terial' is blown into the apex of thefanshaped hood, and the material is distributed by the hood onto theconveyor 1. A plurality of pipes 8, 9, 10, ll-and' 12, supply the loosematerial to the distributing hoods 3, 4, 5, 6 and 7 respectively. Theprojecting end 13 of the pipe 8 supports the hood 3. The opening in theendof the pipe faces downward into the hoodand the size of this isprovided for the purpose of fixing'the i sleeve 14 in an adjustedposition. By moving the sleeve further into the hood 3, the character ofthe stream of material being deposited by the hood is altered so as todeposit more material near the edges of the conveyor 1 than in themiddle. It will be appreciated that any desired distribution ofthe'material can be efiected by simply mov-' ing the regulating device14 back and forth along the pipe 8. Each of the hoods 4, 5, 6-

and 7 is provided with a regulating devlce 14 similar in all its detailsto that described in connection with hood 3. These details are clearlyshown in Figures 5 to 7, inclusive. v

In addition to. the regulating devices 14 just described, the pipes 8,9, 10, 11 and 12 are preferably provided with slide valves 17 and 18(see Figure 4). By adjusting these valves, the stream of materialpassing 'through the pipes can be partially cut off It will beunderstood that any number of hoods can be employed, a supply pipe beingprovided for each hood. These pipes may communicate with sources ofmaterial adapted to be blown into the several hoods.

"These sources may be separate and distinct so that materials ofdifferent kinds can be supplied to the different hoods or the severalpipes may communicate with a single supply pipe so that the same kind ofmaterial is supplied to all of the distributing hoods. I have shown sucha supply pipe at 19 in Figures 1 and 2. This supply pipe may beconstructed in any desired form, so as to supply material to the severalpipes 8, 9, 10, etc. I have shown a short piece of roundpiping 20communicating with a manifold 21 of substantially rectangularcross-section. This manifold has a plurality of outlets communicatingwith the pipes. 8, 9, 10, 11 and 12. A valve 22 is provided in eachoutlet for regulating the flow of material therethrough. It will beunderstood that material such as wood fibers can be blown through thepipe 20 and manifold 21 by any suitable fluid pressure apparatus.

Apparatus of this type is well known and,

therefore, it is deemed unnecessary to illustrate any specific form ofsuch apparatus in the drawings. By referring to Figures 3 and 4, it willbe noted that the pipe 8 has a right angle bend therein near t e pointwhere it communicates with the hood 3.

Pipe 23 communicates with the pipe 8 at this point as clearly shown inFigures 2, 3, and 4. Similar pipes 24, 25, 26 and 27 communicate withthe pipes 9, 10, 11, and 12 respectively. These pipes 23, 24, etc., areshown connected to a manifold 31 through which material such as woodcotton can be blown if desired. This pipe may be used V for introducingmaterial into the stream of material passing through pipes 8, 9, etc.,or it may be used for simply introducing jets of air into the pipes 8,9, etc., where these pipes communicate with each other, as best shown inFigures 3 and 4. An adjustable nozzle 28 is provided in each of thepipes 23, 24, 25, 26 and 27. This nozzle is enclosed by a sleeve 29slidable on the pipe 23. The axis of the nozzle is inclined at an angleto the sleeve and, therefore, by rotating the nozzle about'the pipe onwhic it is mounted, the angle at which the jet issuing from the nozzleimpinges upon the stream flowing through pipe 8 can be altered. Vith thenozzle in the position shown in Figure 3, the jet issuing from thenozzle serves to increase the velocity of the stream flowing throughpipe 8. This serves to discharge the material intothe hood 3 at a morerapid rate than would otherwise be the case. By rotating the nozzle 28until it occupies the position shown in Figure 4, the flow of materialthrough pipe 8 can be retarded materially. The jet in this positioninterferes with the normal flow of material through pipe 8. In this way,the

quantity and velocity of the material suplied to any one of the hoods 3,4, 5, 6 and 7 can be regulated. It will be understood that the nozzles28 can be turned to any intermediate position between the extremepositions shown in Figures 3 and 4 to roduce any desired effect upon thestream owing through pipe 8. Furthermore, a valve 30 is provided in theinlet endof each of the pipes 23,24, etc. for regulating the floiv -ofmaterial or air through these pipes.

My invention makes it possible to regulate the character of thecomposite layer of material deposited upon the conveyor 1,.

with extremenicety. Each of the distributing hoods can be independentlyregulated so as to distribute the material issuing therefrom in anydesired manner. Furthermore, the velocity and quantity of materialsupplied to any one distributing hood can be regulated by adjustablemeans which affects only this one distributor. The main supply pipe 20.can be used for supplying a plurality of streams of material to theseveral distributing hoods, the amount and velocity of the material ineach stream being independently regulated. The auxiliary supply pipe 31can be used for the purpose of injecting a stream of material or airinto each stream of material supplied by prising a plurality of eachhood commumcating therewit with the main and auxlliary supply pipes,

of the appended claims.

hood, and regulating the ve terial supplied to the hood.

, 7. A system of the type descn the main supply pipe 20, and theseauxiliary streams can also be independently regulated to control thequantity, velocity anddirection of the material in the several pipes. v

It is to be understood that my invention can be used for variouspurposes and that the details illustrated and described cail be modifiedor, in some instances, eliminated without sacrificing all of theadvantages of my invention. The invention is not limited to theparticular embodiment illustrated and described but includes suchmodfrom the hoods, and means for regulating the distribution in eachhood independently of the'others.

2; A'system of the type described, com- 9 prising a distributing hood,means for blow-.

ing material into the hood, and independent fluid pressure means forregulatin the velocity of the material blown into the ood.

3. A-system of the type described, comprising a distributing hood, meansfor blow;

means within the mg material into the hood distribution of the hood forre lating the material wit 'n thehood, and independent fluid pressuremeans for regulating the velocity of the material blown into the hood.

4. A system of the type described, comprising a distributing hood meansfor blowmg material into the hoo and means for simultaneouslysupplying-other material to 40 the stream of material being blownfixlilto the ocity o t e ma- 5. A system of the type described,comprising adistributing hood means for blowing material into the hooand fluld ressure means for simultaneously supp ying other material tothe stream of material being blown into the hood, and regulating thevelocity of the material supplied to the hood.

6. A system of the type described, comprising a plurality of hoods", amain supply pipe, an auxiliary supply pipei1 and ata.h.p1p3 erewi an foreach hood communicating t with the main and auxiliary supply pipes.

ed, comprising a plurality of hoods, a main supply pipe, an auxiliarysupply pipe, a pi e fog and adjustable means for restricting eachpassage connecting the auxiliary supply V pipe with the said ipe foreach hood.

8. A system of t e type described, com v prising a plurality of hoods, amam supply pipe, an auxiliary supply pipe, a pipe for each hoodcommunicating therewith and with the main and auxiliar whereb materialcan be lown into the hoods rom both the main and the auxiliary supplypipes, and means associated with the pipe leading to each hood fordeflectin' the stream of material flowing therethroug 9. A system of thetype described, comprising a distributing hood, a main. supply pipe, anauxiliary supply pipe, a pipe communicating with the hood and with themain and auxiliary supply pipes whereby materrial can be blown into thehood from both the main and auxiliary supply pipes, and a nozzle fordirecting a stream of material or air from the auxiliary pipe, against astream of material being supplied by the main supply pipe.

su p y p p 10. A system of the type described, comprising a distributinghood, a main supply pipe, an auxiliary supplyplpe, a pipe communicatingwiththe hood and with the main and auxiliary supply pipes wherebymaterial can be blown into the hood from both the, main and auxiliarysupply pipes, and a nozzle for directin a stream of material or air fromthe auxihary pipe, against a stream of material being supplied by themain su ply pipe, the said nozzle being ad'ustable and arran ed so thatit can be use to increase or (icrease'the velocity of the stream ofmaterial from the main supply pipe. 7

11. A system of the type described, comprising a distributing hood, amain supply pipe, an auxiliary supply pipe, a pipe communicating withthe hood and with the main and the auxiliary supply ipes whereby material can be blown into t e hood from both the main and the auxiliarysupply pipes, a nozzle for directing a stream of materlal-or air fromthe auxiliary pipe, a ainst a stream of material being supplie mainsupply pipe, and means for restricting the stream flowing from theauxiliary pipe to the nozzle.

12. A system of the type described, 0011m by the prising a distributinghood, a main supply" pipe, an auxiliary supply pipe, a i e communicatinwith the hood and with. the main and t e auxiliary supply pipes wherebymaterial can be blown into the hood. from both the main and theauxiliary su ply pipes, a nozzle fordirecting a stream 0 material or airfrom the auxiliary pipe against a stream of material being supplied bythe main supply pipe, means on restricting the stream flowm from theauxiliary pipe-to I the nozzle, and additional means for restricting theflow of the stream of material from the main supply pipe.

13. A system of the type described, comprising a distributing hood, amain supply pipe, an auxiliary supply pipe, a pipe communicating withthe hood and with the main and auxiliary supply pipes whereby materialcan be blown into the hood from both the main and the auxiliary su 1 pies, a nozzle for directing a stream o t nl ater ial or air from theauxiliary pipe against a stream of material being supplied by the mainsupply pipe, and means of the combined streams from the main andauxiliary supply pipes.

14:.In a system of the type described, a pipe through which loosematerial can be blown, an adjustable nozzle within said pipe,

and a second p1pe communicating with-the first pipe just in front ofsaidnozzle, the said nozzle being rotatably mounted and having the mouththereof located at one side of the axis-of the pipe enclosing the same.

15. In a system of the type described, a pipe through which loosematerial can be blown, an adjustable nozzle within said pipe, and asecond pipe communicatingwith the first pipe just in front of saidnozzle, the

said nozzle being rotatably mounted and p for restricting the flowhavingthe axis thereof inclined at an angle to the axis of the pi e enclosingthe nozzle. I

16. In a system 0 the type escribed, a pipe through which loose materialcan be blown, and a pair of adjustable slides ar-l outlet end of saidpipe and ranged near the adapted to be moved toward each other in thepipe to restrict and direct the flow of material therethrough vand tomaintain the directed material stream in axialalignment with the pipe.

17. In a system of the type described, the

HENRY HARRIS PAYZANT.

